Yes , the LS-650 is almost PERFECT isn't it !
Really it closer than it looks .
1. The Taller gear is a piece of cake (Kawasaki 454 or 500 (25 tooth) pulley). Runs down the Super-Slab at 75mph so happily you'll think its made to do it .
2. The cam chain adjuster has a ratchet action to keep it from backing up once expanded , so you don't need that super spring that Suzuki puts in. I've been 20,000 miles with 1/4 strength spring and the adjuster might have moved one click .
3. The seat off a Harley FatBoy is very easy to modify for the LS-650 , and is very comfortable . Or the 03 and older Sportster seats are very close to a strait fit. Harley makes good parts !
4. Almost all the after market speedometers' work just fine , some-where on this site is the cable info. The trip-set gets as simple as a luggage combination lock (3 numbers) .
5 Your going to need a welder for the fuel tank expansion , unless ya ask OldFeller !
I think it was a GS-250 that worked for me .
6. I'm getting over 20,000 mile from Commander II tires , 140/90-15 and they ride great.
I'm 5'10" so I like a tall shock on the rear ... seems like any part of any bike will fit this thing !
350#'ish bike